Puphapun, Wanpen, and Prachak Bouphan. “Administrative performance of the chief at primary care units, Nakhonratchasima province”. Asia-Pacific Journal of Science and Technology 16, no. 7 (April 19, 2017): 845–854. accessed September 29, 2026. https://so01.tci-thaijo.org/index.php/APST/article/view/83594.